zerostat – Ground Zero Electrostatics Blog

21 Jul

Can New Flooring Be Installed Over Old?

Whether your company has just invested in a new to them facility or is upgrading their current locations due to time or elevated ANSI/ESD standards, one of the largest expenses they will face is replacing the existing flooring.

Based on the existing installation, this can be a very time consuming task – days to strip off the old flooring, etch or acid burn off any leftover adhesive residue. Plus the very real possibility of damaging the concrete itself or a pre-existing moisture barrier.

Which leads to a popular question from facility and production managers – can new ESD flooring be installed over existing flooring?

And depending on who you talk to, the answer is: Yes. No. And, of course, Maybe.

Yes.

If an existing floor is well-bonded, ANSI/ESD 20.20 compliant and in reasonably good condition, theoretically, the answer is yes.

Certain flooring options pose a lower risk and are considerably easier to install over an older floor. Vinyl, for example, generally can be installed over top existing vinyl. Generally.

Problems arise when the old floor has become hard and stiff. It may be harder to install over it, and if the initial bond doesn’t take, vinyl is unforgiving and may delaminate – requiring a complete stripping and reinstallation that is likely to cost more than the initial money saved, not to mention the time lost during the removal and reinstallation.

An additional choice to consider is installing carpet tiles over old vinyl. Carpet has become a popular choice to install over existing floors because the irregularities of the surface below the carpeting are virtually hidden behind its barely reflective surface.

Another option is Zero Stat Crete – a state of the art water-based epoxy coating – which can, after proper testing, be applied over an area that has had the previous vinyl or carpeting tile removed – often without needing to strip off any leftover adhesive.

No.

Some experts caution that you should NEVER install a new floor covering over an old one. Along with the warnings above, the old flooring might hide structural defects, might not be properly bonded or might result in a plasticizer contamination of the new flooring, which could radically affect the quality and effectiveness of its ESD prevention.

Also, by not removing the old flooring, moisture concerns that need to be addressed may not be discovered.

Additionally, depending on the age of the old flooring, it might have been made with asbestos, a manufacturing material that causes severe respiratory problems and may lead to death.

Maybe.

Experts say that almost any floor can be installed over an old floor as long as the old floor is in good condition and well-bonded to the sub floor. BUT…

There are just too many variables to accurately consider or discuss every flooring replacement or recovering option in a single posting.

Even if your scenario is similar one of the ones we’ve elucidated above, there may be additional factors in your specific facility that are not taken into account in our hypothetical illustrations.

Which is why we always recommend speaking to a qualified flooring professional before making any final decisions. There is not usually a financial cost associated with their consultation and/or site visit, but the preventative savings far outweigh any nominal up front cost.

For a free consultation – or any other questions you may have, please contact us. We would love to be your full service, seamless ESD solution provider!

15 Jun

Conductive, Dissipative, or Anti-Static Flooring?

You’re hard at work at your latest assignment. Your boss wants you to put together a complete plan for creating a large-scale electrostatic protection area (EPA) for a client who will be assembling various sensitive electronics and they want to avoid any risk of losing their investment due to electrostatic discharge (ESD).

You’ve selected the grounding cables, the workstations, the custom cut matting, containers and furniture, all designed to minimize or eliminate the slightest chance of ESD damage. But a curious thing happens when you research the proper flooring.

A simple Internet search for ESD flooring yields numerous options, more than you expect and you start to notice they all fall under 3 categories. In an instant, you’re faced with a decision, just like the game show, “Let’s Make a Deal.”

Suddenly, Monty Hall (or Wayne Brady, the current host!) is staring at you, asking do you want to choose door number one, number two, or number three: conductive, dissipative, or anti-static? The clock is ticking… How do you decide?

Door #1

For starters, let’s eliminate one of your options. Much like the ‘ZONKS’ of the game show, ‘anti-static’ is a worthless term in your ESD vocabulary. By strict definition, anti-static refers to a material that resists generating a charge. At one time it did designate a level of resistance, but was so overused and misunderstood, the term was removed from the ANSI/ESD standards.

So likewise, eliminate the term ‘anti-static’ from your discussion.

Deciding between the other two doors requires a closer look at the specific needs of the area for which the flooring is intended.

We’ve talked in another article about Ohms (Ω) and how they are the unit of measurement for resistance to electrical current.

Door #2

Because of the size and scope of most areas where it is necessary, the most common form of ESD flooring is referred to as ‘Static Conductive.’ Conductive flooring is at the low end of the electrical resistance scale.

Conductive carpeting may even be laced with carbon lines or metallic yarn fibers to encourage the flow of electricity. Because of the low electrical resistance, electrons flow easily across and through the surface, and can be grounded safely and quickly. This carpeting or vinyl tile is laid down with a conductive adhesive and grounded through the use of conductive tape or copper strips that run to a common ground.

This type of flooring is also generally a little more cost-effective than a dissipative solution.

Door #3

On the higher end of the resistance scale falls ‘Static Dissipative’ flooring. The higher resistance of these materials keeps the electrical charge more under control as it slowly flows over the surface and into a ground. Dissipative flooring is much more common in shared office environments where everyday shoes are more common, as opposed to a location where every element, from furniture to footwear, is controlled.

In our example above, the client will be assembling sensitive electronics like circuit boards and such in a large-scale environment. In this instance, a vinyl tile, or a poured epoxy flooring with conductive properties would most likely be the best option.

In an office setting where a company has their own IT department that fixes and assembles computers within the same facility, a dissipative, static resilient tiled floor would be a better fit.

But the fact is, these are very simplified examples of the myriad of variables that you can encounter when selecting the proper ESD controlled flooring. Your best option is to talk to an expert.

We’d love to be the experts you can count on for your full service, seamless ESD solutions. For more information or advice on your specific ESD flooring needs – or any other ESD questions, contact us today.

20 Apr

How Do You Care for Your ESD Floor?

So you’ve finally got your brand spanking new Electrostatic Discharge (ESD) preventative flooring installed. It looks great, it works great. But how do you keep it that way?

You’re smart enough to know that just like this is a specialized floor, it requires specialized care. Not just any cleaning products will work. You certainly don’t want to void the warranty, or even worse, compromise the ESD properties of the floor. That could drastically escalate costs – replacement of the damaged electronics, replacing the floor itself – having to apologize to your clients and replace the electronics they trusted you to provide.

You can’t find anything in the installation instructions. You hear the boss’ voice around the corner, you know he’s going to ask these questions. You don’t have the answers. You look down and you’re not wearing any pants!

Well, we can’t do anything about your pants, but we do have some answers to avoid that other nightmarish scenario.

For starters, take a break – for the first 5 days following a new installation, don’t wash or machine scrub the floor. This allows the adhesive to properly bond with the concrete base, as well as to prevent excess moisture – the #1 enemy of ESD flooring – to interfere with the adhesive.

The First Steps

Once the first week has passed, do an initial maintenance cleanup. Sweep or dust mop the surface to clear it of all sand, grit, debris, or dirt. Then mix a neutral pH detergent with a small bit of water in a mop bucket.

Dip the mop in the solution and fully wring it out. It is important to ONLY use a damp mop. Do not flood the floor with cleaning solution. Use as little liquid as possible to clean the surface.

If needed, scrub the floor using a rotary scrubber with scrubbing pad or automatic scrubber with scrubbing pads. Again, using as little water as possible!

Use the wrung out mop or a wet vac to wipe up any excess cleaning solution. Carefully rinse the surface with cool, clear water, but not too much, and again vacuum or damp mop up the water and let it dry.

Never use standard floor wax or standard floor finish! Doing so will destroy the floor’s ability to prevent ESD. A high gloss appearance can be achieved with a high speed buffing machine with an untreated polishing pad.

Daily Care & Cleaning – Two Options

For your day to day cleaning and upkeep, there are two standard approaches for ESD flooring. Both are viable, but for obvious reasons, we prefer the first method.

Safety First!

Always be aware that a wet floor is more slippery, and therefore more dangerous to personnel. Try to coordinate cleaning of the floor to the end of the workday when fewer people are around, put up appropriate signs, and always exercise caution to prevent workplace injuries.

The first step in either case is to sweep or dust/dry mop the surface.

Dry Maintenance Method (Option 1)

By limiting the amount of liquid your floor is exposed to, you stand they best chance of avoiding the #1 enemy of ESD flooring – moisture. The Dry Maintenance Method is a simple, single step process.

Spray clean or burnish floor using a 1200 – 1500 rpm rotary buffing machine with appropriate pads (usually white) and a spray buff solution containing water, alcohol and a pH neutral detergent.

If heavy cleaning is necessary use a more concentrated pH neutral detergent and a brown pad.

Wet Maintenance Method (Option 2)

Similar to our initial cleanup procedures following installation, the wet maintenance method uses a damp mop and a cleaning solution that includes a neutral pH detergent.

If the floor is exposed to grease or oil, a pH neutral, citrus-based degreasing detergent may be used.

Scrub with rotary scrubber with scrubbing pad or automatic scrubber with scrubbing pads. Again, do not flood the floor with solution, water or any liquid.

Wipe up the solution with a damp mop or wet vac.

Carefully rinse with clean cool water, wipe it up, then let the floor dry (generally overnight).

Two final notes:

Several times we’ve mentioned using a pH neutral detergent. While there are many options, we highly recommend the industry standard – ZeroStat products. They can be purchased through our site or any reputable supplier of ESD preventative products.

Earlier, we recommended not using a standard floor wax. While there are professional ESD waxes available from ZeroStat that maintain the ESD preventative properties of your flooring, even those waxes generally cut five to ten tears off the life of your ESD floor and should be used with caution.

We would love to be your full service, seamless ESD solution provider. Contact us today for more information.

05 Dec

Cleaning an ESD Floor

Q: How do you clean the floor, can it be waxed, and if so what type of wax?

A: All our ESD Dissipative and Conductive floors are designed to be wax free, low maintenance with permanent electrical properties. We recommend daily sweeping and damp mopping with our “ZeroStat Clean” ESD, pH neutral, general purpose floor cleaner or equal. These are the two most important factors in keeping you floor looking / performing it’s best, long term.

To keep the factory shine and luster of our floors, we recommend polishing the floor with a floor maintainer and a white pad. Some of our clients choose to incorporate our ZeroStat Buff for this process, but this is optional. The more frequently you dry buff/polish the floor the tighter the surface composition becomes, hence, will require less and less buffing to maintain a high shine as time progresses. We also manufacture a product called ZeroStat Diamond Seal, which is a ESD Polymer Coating used to seal and streamline the maintenance of our ESD flooring even further. Basically, a protective ESD finish developed as a protective barrier over the surface to resist scuff marks caused by chair, carts, shoes, forklifts and other mobility equipment.Applying an ESD Wax, (such as ZeroStat Diamond Coat II) is an alternative to the dry buffing process, but know that it is somewhat of a trade off. The trade off is, that Waxing with give you an instant high gloss and shine, verses dry buffing, but it can lower the electrical resistance by up to a half of a decade in electrical resistance. This drop in the electrical resistance isn’t impacted on static Dissipative floors as much as it applies to static Conductive floors. It really won’t impact the overall performance of our flooring systems, due to our ESD flooring falling into the lower end of our electrical specifications verse the higher end of the resistance specification.

Note: Due to the broad spectrum of ESD wax quality, we STRONGLY recommend ZeroStat Diamond Coat II as your wax of choice, as most of the ESD floor finishes available in the industry don’t perform to the electrical range that is required to keep our floors in our specified electrical ranges.

I hope this answers most of your questions, please feel free to contact us with any further question, comments and/or concerns. I have also attached data sheets for our ESD floor care products for your review and consideration.

More Information (PDF):
» ESD Floors Care and Maintenance
» ZeroStat Buff Specification Sheet
» ZeroStat Clean Specification Sheet
» ZeroStat Coat Specification Sheet
» ZeroStat DiamondCoat II Specification Sheet
» ZeroStat DiamondSeal Specification Sheet